The first episode is when we are introduced to Sister Veronica, a woman drafted to join the team after having worked in Hong Kong alongside Mother Mildred (Miriam Margolyes). She works as a health visitor, who are nurses or midwives who have additional training in community public health nursing.

One of the more important parts of Sister Veronica's job is to also ensure safety in homes with individuals and families, and show particular interest in taking care of children.

Sister Veronica was also able to pull off a first for Nonnatus House staff, which was to get a moped for transportation instead of a bicycle. It's refreshing to see someone not on a bicycle, and in a way, it brings a bit of modern '60s to the show that was needed.

One thing to watch out for is Sister Veronica's "enduring flaw," which is not telling the whole truth. Although she does penance every single time, the fact that Sister Veronica calls it a "useful tool" may come back to bite her later on.